Nickel-Cadmium Secondary Cell
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Questions and Answers

What is the composition of the positive plates in a Nickel-Cadmium Secondary Cell?

  • Nickel hydroxide (Ni(OH)) (correct)
  • Cadmium hydroxide (Cd(OH))
  • Lead-acid
  • Potassium hydroxide (KOH)
  • What is the advantage of Nickel-Cadmium Secondary Cells over lead-acid type cells?

  • Lower cost
  • Longer lifespan
  • Higher energy density
  • Ability to maintain a relatively steady voltage during high current discharge (correct)
  • What is the process by which the plates are made in a Nickel-Cadmium Secondary Cell?

  • Electroplating
  • Chemical deposition
  • Sintering process (correct)
  • Melting and casting
  • What is the purpose of stamping out the plates to the requisite size?

    <p>To allow for the maximum amount of active material to be employed</p> Signup and view all the answers

    What is the composition of the electrolyte in a Nickel-Cadmium Secondary Cell?

    <p>Distilled water and potassium hydroxide (KOH)</p> Signup and view all the answers

    How are the positive and negative plates connected in a Nickel-Cadmium Secondary Cell?

    <p>In a manner similar to the lead-acid type of cell</p> Signup and view all the answers

    What is the primary benefit of using a Nickel-Cadmium Secondary Cell over a lead-acid type cell?

    <p>Ability to maintain a steady voltage during high-current discharge</p> Signup and view all the answers

    What is the purpose of using potassium hydroxide in the electrolyte solution?

    <p>To increase the electrical conductivity of the solution</p> Signup and view all the answers

    What is the result of impregnating the active materials into the plates by chemical deposition?

    <p>Maximum amount of active material employed in the electrochemical action</p> Signup and view all the answers

    How are the plates constructed in a Nickel-Cadmium Secondary Cell?

    <p>By sintering and chemical deposition</p> Signup and view all the answers

    What is the typical relative density of the electrolyte solution in a Nickel-Cadmium Secondary Cell?

    <p>From 1.24 to 1.30</p> Signup and view all the answers

    What is the final step in the construction of the positive and negative plate groups?

    <p>Interleaving and connecting to terminal posts</p> Signup and view all the answers

    Study Notes

    Nickel-Cadmium Secondary Cell

    • Positive plates composed of nickel hydroxide (Ni(OH)₂)
    • Negative plates composed of cadmium hydroxide (Cd(OH)₂)
    • Electrolyte consists of distilled water and potassium hydroxide (KOH) with a relative density of 1.24 to 1.30
    • Batteries have a relatively steady voltage during high-current discharge, making them suitable for engine starting
    • Plates are constructed using a sintering process with active materials impregnated by chemical deposition
    • This construction method allows for maximum active material usage in electrochemical reactions
    • Plates are stamped to size and built into positive and negative plate groups, interleaved and connected to terminal posts, similar to lead-acid cells

    Nickel-Cadmium Secondary Cell

    • Positive plates composed of nickel hydroxide (Ni(OH)₂)
    • Negative plates composed of cadmium hydroxide (Cd(OH)₂)
    • Electrolyte consists of distilled water and potassium hydroxide (KOH) with a relative density of 1.24 to 1.30
    • Batteries have a relatively steady voltage during high-current discharge, making them suitable for engine starting
    • Plates are constructed using a sintering process with active materials impregnated by chemical deposition
    • This construction method allows for maximum active material usage in electrochemical reactions
    • Plates are stamped to size and built into positive and negative plate groups, interleaved and connected to terminal posts, similar to lead-acid cells

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    Description

    Learn about the composition and advantages of Nickel-Cadmium secondary cells, including their ability to maintain a steady voltage during high current discharge.

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